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Finding the Fourth Proportional to 18,205.10, 25,123.22 and 10,245.79

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Solution

The fourth proportional to 18,205.10, 25,123.22 and 10,245.79 is: 14,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.10 : 25,123.22 = 10,245.79 : x
  2. Step 2: Convert to fraction form
    18,205.10/25,123.22 = 10,245.79/x
  3. Step 3: Cross multiply
    18,205.10x = 25,123.22 × 10,245.79
  4. Step 4: Simplify right side
    18,205.10x = 257,407,254.84
  5. Step 5: Solve for x
    x = 257,407,254.84/18,205.10
  6. Step 6: Final answer
    x = 14,139.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.